Question

In a survey of 25 students, it was found that 15 had taken Mathematics, 12 had taken Physics and
had taken Chemistry, 5 had taken Mathematics and Chemistry, 9 had taken Mathematics and
Physics, 4 had taken Physics and Chemistry and 3 had taken all three subjects. Find the number of
students that had taken
1)Physics and Chemistry but not Mathematics
2)none of the subjects
(iii) Mathematics and Physics but not Chemistry (iv) only one of the subjects​

Answer 1

Answer:

1. 4

2.

   (i) 4

 (iii) 9

 (iv) 1